A problem in the US segment of the International Space Station has prompted its six-person crew to quickly lock it up and move to a Russian module but they are not in danger, Russian and US officials said.
“The space station crew is safe,” Nasa spokesman Bob Jacobs said. Russia’s space agency Roscosmos said in a statement that a “leak of harmful substances from the cooling system” prompted the crew to isolate the American module.
“The crew is safe and is in the Russian segment now”, it said in a statement, adding that mission control experts in Moscow and Houston quickly and efficiently co-operated to ensure the crew’s safety. While Roscosmos said positively that there was a leak, Nasa said it was still unclear whether it had actually occurred.
“We saw an increase in water loop pressure, then later saw a cabin-pressure increase that could be indicative of an ammonia leak in the worst-case scenario, so we protected for the worst-case scenario and isolated the crew in the Russian segment of the space station while the teams are evaluating the situation,” Mr Jacobs said.
The Tass news agency reported that just about one third of ammonia was left in the coolant system at the US module and the rest has leaked out.
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